CN110106339B - Continuous rack high-efficiency induction quenching method - Google Patents
Continuous rack high-efficiency induction quenching method Download PDFInfo
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- CN110106339B CN110106339B CN201910403853.2A CN201910403853A CN110106339B CN 110106339 B CN110106339 B CN 110106339B CN 201910403853 A CN201910403853 A CN 201910403853A CN 110106339 B CN110106339 B CN 110106339B
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- 238000010791 quenching Methods 0.000 title claims abstract description 128
- 230000000171 quenching effect Effects 0.000 title claims abstract description 125
- 230000006698 induction Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A continuous rack high-efficiency induction quenching method comprises the following steps: placing the first workpiece on a right side tool, and lowering the right side quenching sensor to be close to the end face of the first workpiece; connecting a quenching power supply with a right quenching sensor so as to perform induction heating quenching on the end face of the first workpiece through the right quenching sensor; after end face quenching is finished, a first workpiece is transferred and placed on a left tool, connection between a quenching power supply and a right quenching sensor is cut off, the quenching power supply is connected with the left quenching sensor, so that a tooth column of the first workpiece is subjected to induction heating quenching through the left quenching sensor.
Description
Technical Field
The invention relates to the technical field of workpiece quenching, in particular to a continuous rack efficient induction quenching method.
Background
In order to improve the service life of the rack, the technical requirements of column quenching and end face quenching are increased for the rack, when the rack is quenched, the rack 100 is required to be fixed firstly, the rack is required to be fixed by combining the structure of the rack, the quenched surface of the rack is required to be fully exposed and cannot be covered, the structure of the rack 100 is shown in fig. 1-3, in the drawing, when the rack is quenched for the column 101, the column 101 is required to be fully exposed and arranged upwards, and when the end face of the rack 100 is quenched, the first end face 102 and the second end face 103 are required to be fully exposed and arranged upwards, so that a special tool is required to fix and position a workpiece.
Disclosure of Invention
It is necessary to provide a continuous rack efficient induction quenching method.
The continuous rack high-efficiency induction quenching method is characterized by comprising the following steps of:
placing the first workpiece on a right side tool, and lowering the right side quenching sensor to be close to the end face of the first workpiece;
connecting a quenching power supply with a right quenching sensor so as to perform induction heating quenching on the end face of the first workpiece through the right quenching sensor;
After the end face is quenched, the first workpiece is transferred and placed on a left tool, the connection between the quenching power supply and the right quenching sensor is cut off, and the quenching power supply is communicated with the left quenching sensor so as to perform induction heating quenching on the tooth column of the first workpiece through the left quenching sensor.
The invention adopts the same quenching power supply to be connected with the right quenching sensor and the left quenching sensor, and controls the quenching power supply to be alternately connected with the right quenching sensor and the left quenching sensor through the controller, so that the two quenching sensors are controlled simultaneously by the same power supply, thereby improving the equipment utilization rate by 50%, saving energy, protecting environment, having high automation degree, high quenching efficiency and stable quenching quality.
Drawings
Fig. 1 is a front view of the workpiece (tooth post) 100.
Fig. 2 is a top view of the workpiece (tooth post) 100.
Fig. 3 is a left side view of the workpiece (tooth post) 100.
Fig. 4 is a front view of the left tool 10.
Fig. 5 is a top view of the left hand tooling 10.
Fig. 6 is a left side view of the left tooling 10.
Fig. 7 is a schematic diagram of the positioning of a workpiece using the left hand tooling 10.
Fig. 8 is a top view of the right tooling 20.
Fig. 9 is a right side view of the right tooling 20.
Fig. 10 and 11 are schematic diagrams of the positioning of a workpiece using the right hand tooling 20.
Fig. 12 is a schematic view of alternating successive quenching of a workpiece.
In the figure: left tooling 10, first bottom plate 11, chute 111, left slide 12, front plate 121, rear plate 122, limit boss 1221, connecting plate 123, right slide 13, left mount 14, right mount 15, right tooling 20, second bottom plate 21, first limit post 211, second limit post 212, first screw 213, second screw 214, baffle 22, right quench sensor 31, left quench sensor 32, work piece (rack) 100, first work piece 110, second work piece 112, third work piece 113, fourth work piece 114, rack 101, first end face 102, second end face 103, pin boss 104.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Referring to fig. 12, a continuous rack high-efficiency induction hardening method includes the steps of:
Placing the first workpiece 110 on the right tooling 20, and lowering the right quenching sensor 31 above the end surface of the first workpiece 110; (2.5 mm gap is left between the quenching end face and the inductor).
Switching on a quenching power supply to the right quenching sensor 31 to induction-heat-quench the end face of the first workpiece 110 through the right quenching sensor 31; the quenching mode is scanning quenching from left to right, the first workpiece 110 starts scanning quenching after stopping heating for 4s, the scanning speed is 160mm/min, the heating power (180-200) kW, the power supply frequency (8-10) kHz, and the total quenching time is about 4.5min.
After the end face quenching is finished, the first workpiece 110 is transferred and placed on the left tooling 10, the connection between the quenching power supply and the right quenching sensor 31 is cut off, and the quenching power supply is connected with the left quenching sensor 32 so as to perform induction heating quenching on the tooth column 101 of the first workpiece 110 through the left quenching sensor 32. The total induction heating time is 5min, the spray cooling time is 3.5min, the heating power (120-160) kW and the power supply frequency (2.5-3.5) kHz.
The invention adopts the same quenching power supply to be connected with the right quenching sensor 31 and the left quenching sensor 32, and controls the quenching power supply to be alternately connected with the right quenching sensor 31 and the left quenching sensor 32 through the controller, so that the two quenching sensors are simultaneously controlled by the same power supply, thereby improving the equipment utilization rate by 50%, saving energy, protecting environment, having high automation degree, high quenching efficiency and stable quenching quality.
Further, after the induction hardening of the tooth post 101 of the first workpiece 110 by the left hardening inductor 32 is completed, the first workpiece 110 is cooled by the cooling system, and at the same time, the second workpiece is placed on the right tooling 20 by the manipulator, and the position between the right hardening inductor 31 and the second workpiece 112 is adjusted so that the gap between the right hardening inductor 31 and the second workpiece 112 is identical.
The time for heating the first workpiece 110 on the left tooling 10 is utilized to adjust the position of the second workpiece 112 on the right tooling 20, thereby comprehensively preparing time for the end face quenching of the second workpiece 112 on the right tooling 20 without reserving separate time for the position adjustment of the second workpiece 112.
Further, after the heating of the first workpiece 110 on the left tooling 10 is completed, the manipulator grabs the first workpiece 110 and places the first workpiece on an external stacking position, cuts off the connection between the quenching power supply and the left quenching sensor 32, and connects the quenching power supply with the right quenching sensor 31 so as to perform induction heating quenching on the end face of the second workpiece 112 through the right quenching sensor 31.
At this time, the second workpiece 112 is already placed on the right tooling 20, and the positions of the right quenching sensor 31 and the right tooling 20 are also adjusted, which is completed while the left quenching sensor 32 heats the tooth post 101 of the first workpiece 110, without separately reserving the adjustment time.
Further, at the time when the left quenching sensor 32 cools the first workpiece 111, the right quenching sensor 31 performs quenching treatment on the end face of the second workpiece 112, the manipulator grabs and places the second workpiece 112 on the left tooling 10, adjusts the positions of the second workpiece 112 and the left tooling 10, cuts off the connection between the quenching power supply and the right quenching sensor 31, and connects the quenching power supply and the left quenching sensor 32 so as to perform induction heating quenching on the tooth post 101 of the second workpiece 112 through the left quenching sensor 32.
Further, after the column 101 of the second workpiece 112 is heated by the left quenching sensor 32, the second workpiece 112 is cooled by the cooling system, and the third workpiece 113 is subjected to the end face heating quenching by the right station.
By so doing, the fourth workpiece 114 and the like are quenched.
In the invention, a controller is arranged, the controller controls the on-off of a quenching power supply, a left quenching sensor 32 and a right quenching sensor 31, and a displacement sensor is arranged on the manipulator to detect the position of a workpiece, so that the controller controls the manipulator to adjust the position of the workpiece.
Further, the left tooling 10 includes a first bottom plate 11, a left sliding block 12, a right sliding block 13, a left fixing piece 14, and a right fixing piece 15, the first bottom plate 11 is a flat plate with a length greater than that of the rack, a sliding groove 111 extending along the length direction is formed on the first bottom plate 11, the left sliding block 12 and the right sliding block 13 are arranged at two ends of the first bottom plate 11, a hole opposite to the sliding groove 111 is formed at the bottom of the left sliding block 12, a hole opposite to the sliding groove 111 is formed at the bottom of the right sliding block 13, the left fixing piece 14 is connected between the hole of the left sliding block 12 and the sliding groove 111 so as to lock the left fixing piece 14 along the sliding groove 111, the right fixing piece 15 is connected between the hole of the right sliding block 13 and the sliding groove 111 so as to lock the right fixing piece, the right fixing piece 15 moves left and right along the sliding groove 111, the left sliding block 12 and the right sliding block 13 are identical in structure and symmetrically arranged, the left sliding block 12 includes a front plate 121, a rear plate 123, a boss 122 is arranged on the rear plate 122, a boss 122 is opposite to the front plate 122, a boss 122 is arranged on the rear plate 122, and a boss 122 is opposite to the front plate 122, a boss is arranged on the front plate 122, and a boss plate is opposite to the front plate 122 is arranged on the front plate and is opposite to the boss plate to the front plate and the boss plate of the boss plate and is opposite to the boss plate 122.
In the scheme, the left tooling 10 positions the workpiece in the left-right direction through the front plate 121 of the left slide block 12 and the front plate 121 of the right slide block 13, positions the workpiece in the front-back direction through the rear plate 122 of the left slide block 12 and the rear plate 122 of the right slide block 13, thereby realizing the positioning of the workpiece in all directions, ensuring that the workpiece is stably connected with the left tooling 1010 and facilitating quenching operation; moreover, the left slide block 12, the right slide block 13 and the sliding groove 111 are matched, so that the device can be suitable for positioning workpieces with different sizes.
The above-mentioned right-left direction is a direction along the length direction of the work, and the front-rear direction is a direction along the thickness direction of the work, that is, the same direction as the axial direction of the tooth post 101 of the work is the front-rear direction.
Further, the left fixing member 14 includes a left screw and a left nut, and the right fixing member 15 includes a right screw and a right nut.
Further, the device further includes a right side tooling 20, the right side tooling 20 includes a second bottom plate 21 and a baffle 22, the second bottom plate 21 is placed along a horizontal plane, the baffle 22 is disposed at the rear of the second bottom plate 21 along the length direction of the second bottom plate 21, so as to form a flange for limiting the workpiece to move back and forth, a first screw hole and a second screw hole are further disposed at the end of the second bottom plate 21, a first limit column 211 and a second limit column 212 are disposed above the first screw hole and the second screw hole respectively, screw holes are formed at the axial positions of the first limit column 211 and the second limit column, a first screw 213 is screwed into the screw holes of the first screw hole and the first limit column 211, so as to connect the first screw hole and the second screw hole, and a second screw 214 is screwed into the screw hole of the second limit column 212, so as to connect the first screw hole and the second limit column 212.
Further, the outer diameters of the first limiting post 211 and the second limiting post 212 are adjustable.
For example, the hole diameters of the pin holes of different racks are different, and the outer diameters of the corresponding first limit column 211211 and second limit column 212 are also different, so that the limit columns with different outer diameters are set in the scheme, so that racks with different size requirements are adapted.
In this scheme, right side frock 20 is applicable to the terminal surface quenching to the work piece, and left side frock 10 is applicable to the tooth post 101 quenching to the work piece, through the setting of two frock, can be with the whole completion of quenching to the work piece.
The modules or units in the device of the embodiment of the invention can be combined, divided and deleted according to actual needs.
The foregoing disclosure is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the scope of the invention, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the invention as defined by the appended claims.
Claims (9)
1. The continuous rack high-efficiency induction quenching method is characterized by comprising the following steps of:
placing the first workpiece on a right side tool, and lowering the right side quenching sensor to be close to the end face of the first workpiece;
connecting a quenching power supply with a right quenching sensor so as to perform induction heating quenching on the end face of the first workpiece through the right quenching sensor;
After the end face is quenched, the first workpiece is transferred and placed on a left tool, the connection between the quenching power supply and the right quenching sensor is cut off, and the quenching power supply is communicated with the left quenching sensor so as to perform induction heating quenching on the tooth column of the first workpiece through the left quenching sensor.
2. The continuous efficient induction hardening method for racks of claim 1, characterized by:
and when the left quenching sensor carries out induction heating on the tooth column of the first workpiece, the manipulator places a second workpiece on the right tooling, and the position between the right quenching sensor and the second workpiece is adjusted so that the right quenching sensor is close to the second workpiece.
3. The continuous efficient induction hardening method for racks of claim 1, characterized by: after the first workpiece on the left side tool starts to be cooled, the connection between the quenching power supply and the left side quenching sensor is cut off, the quenching power supply is connected with the right side quenching sensor, so that the end face of the second workpiece is subjected to induction heating quenching through the right side quenching sensor, and meanwhile, the first workpiece is grabbed and placed on an external stacking position by the manipulator.
4. A continuous efficient induction hardening method for racks as set forth in claim 3, characterized in that: after the right quenching inductor quenches the end face of the second workpiece, the manipulator grabs the second workpiece and places the second workpiece on the left tool, positions of the second workpiece and the left tool are adjusted, connection between the quenching power supply and the right quenching inductor is cut off, and the quenching power supply and the left quenching inductor are connected so as to perform induction heating quenching on the tooth column of the second workpiece through the left quenching inductor.
5. The continuous efficient induction hardening method for racks, as set forth in claim 4, characterized in that: when the left quenching sensor quenches and heats the tooth column of the second workpiece, the manipulator simultaneously places a third workpiece on the right tooling, and the position between the right quenching sensor and the third workpiece is adjusted so that the right quenching sensor is close to the third workpiece.
6. The continuous efficient induction hardening method for racks, as set forth in claim 5, characterized in that: the left side frock includes first bottom plate, left side slider, right side slider, left side mounting, right side mounting, and first bottom plate is the dull and stereotyped that length is greater than rack length, sets up the spout that extends along length direction on first bottom plate, left side slider, right side slider set up in the both ends of first bottom plate, set up in the bottom of left side slider with the just right hole of spout, set up in the bottom of right side slider with just right hole of spout, the left side mounting is connected between the hole of left side slider and spout to lock the two, the left side mounting is moved about along the spout, the right side mounting is connected between hole and the spout of right side slider to lock the two, the right side mounting is moved about along the spout, left side slider and right side slider structure are the same, and the symmetry sets up, left side slider includes front bezel, back plate, connecting plate level set up in the top of bottom plate, set up in the connecting plate with the just right hole of spout, front bezel and back plate are fixed relatively and are arranged in the front bezel and back plate, the front bezel and back plate are the boss is used for protruding the top of the side boss, the boss carries out on the top is the top limit plate, the boss is the top is just right side limit plate.
7. The continuous efficient induction hardening method for racks of claim 6, characterized by: the left side mounting includes left side screw rod, left side nut, the right side mounting includes right side screw rod, right side nut.
8. The continuous efficient induction hardening method for racks of claim 7, characterized by: the right side frock includes second bottom plate, baffle, the second bottom plate is placed along the horizontal plane, and the baffle sets up in the rear of second bottom plate along second bottom plate length direction to form the flange that restricts the work piece back and forth movement, still the tip of second bottom plate sets up first screw and second screw the top of first screw and second screw sets up first spacing post and second spacing post respectively first spacing post and the spacing axle center position of second all sets up the screw, first screw in first screw and the screw of first spacing post, in order to connect the two, the second screw in second screw and the screw of second spacing post are connected the two.
9. The continuous efficient induction hardening method for racks of claim 8, characterized by: the outer diameters of the first limiting column and the second limiting column are adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910403853.2A CN110106339B (en) | 2019-05-15 | 2019-05-15 | Continuous rack high-efficiency induction quenching method |
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| CN201910403853.2A CN110106339B (en) | 2019-05-15 | 2019-05-15 | Continuous rack high-efficiency induction quenching method |
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| CN110106339A CN110106339A (en) | 2019-08-09 |
| CN110106339B true CN110106339B (en) | 2024-07-30 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202337806U (en) * | 2011-12-01 | 2012-07-18 | 十堰高周波科工贸有限公司 | Automatic quenching machine tool with double groups of stations |
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| FR752924A (en) * | 1932-07-09 | 1933-10-03 | Petits Fils Francois Wendel | Method and installation for the treatment of rails and other rolled bars and resulting products |
| JPH0665725B2 (en) * | 1986-03-10 | 1994-08-24 | 第一高周波工業株式会社 | Continuous hardening device for rails |
| JP4235336B2 (en) * | 2000-02-25 | 2009-03-11 | 電気興業株式会社 | Induction hardening method of rack bar and induction hardening apparatus thereof |
| JP2004010956A (en) * | 2002-06-06 | 2004-01-15 | Toyoda Mach Works Ltd | Heat treatment method of rack bar, and rack bar |
| AT505930B1 (en) * | 2008-02-04 | 2009-05-15 | Voestalpine Schienen Gmbh | DEVICE FOR HARDENING RAILS |
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| CN202744592U (en) * | 2012-04-19 | 2013-02-20 | 湖北三江航天万山特种车辆有限公司 | Induction hardening device for gear ring |
| CN202576485U (en) * | 2012-05-19 | 2012-12-05 | 西安煤矿机械有限公司 | Rack rail wheel single-tooth quenching inductor |
| CN102766751B (en) * | 2012-07-14 | 2014-05-07 | 安徽省宣城市乾坤回转支承有限公司 | Process method for quenching rotary support gear |
| JP6014430B2 (en) * | 2012-09-12 | 2016-10-25 | 株式会社アステア | bumper |
| CN202925066U (en) * | 2012-11-21 | 2013-05-08 | 山推工程机械股份有限公司 | Die quenching device for inner gear ring |
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| CN202337806U (en) * | 2011-12-01 | 2012-07-18 | 十堰高周波科工贸有限公司 | Automatic quenching machine tool with double groups of stations |
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